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SuperH 2A - fix sign in action

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mumbel
2019-10-19 21:13:05 -05:00
parent d081700b0c
commit cab68a3ece
1 changed files with 12 additions and 11 deletions
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23
Ghidra/Processors/SuperH/data/languages/superh.sinc
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@@ -91,7 +91,7 @@ define token instr32(32)
l_rm_20_23 = (20, 23)
l_rn_24_27 = (24, 27)
l_opcode_28_31 = (28, 31)
l_simm20_00_16 = (0, 16) signed
l_imm20_00_16 = (0, 16)
l_simm20_20_23 = (20, 23) signed
l_imm3_20_22 = (20, 22)
;
@@ -499,26 +499,27 @@ disppc2: @(disp,pc) is disp_00_07 & pc
l_rm_20_23 = zext(*:2 (disp + l_rm_20_23));
}
imm20: "#"value is l_simm20_20_23 & l_simm20_00_16
[ value = ((l_simm20_20_23 << 16) | l_simm20_00_16); ]
simm20: "#"value is l_simm20_20_23 & l_imm20_00_16
[ value = ((l_simm20_20_23 << 16) | l_imm20_00_16); ]
{ export *[const]:4 value; }
imm20s: "#"value is l_simm20_20_23 & l_simm20_00_16
[ value = ((l_simm20_20_23 << 16) | l_simm20_00_16) << 8; ]
simm20s: "#"value is l_simm20_20_23 & l_imm20_00_16
[ value = ((l_simm20_20_23 << 16) | l_imm20_00_16) << 8; ]
{ export *[const]:4 value; }
# MOVI20 #imm20, Rn 0000nnnniiii0000 iiiiiiiiiiiiiiii imm → sign extension → Rn
:movi20 imm20, l_rn_24_27
is l_opcode_28_31=0b0000 & l_rn_24_27 & l_opcode_16_19=0b0000 & imm20
:movi20 simm20, l_rn_24_27
is l_opcode_28_31=0b0000 & l_rn_24_27 & l_opcode_16_19=0b0000 & simm20
{
l_rn_24_27 = imm20;
l_rn_24_27 = simm20;
}
# MOVI20S #imm20, Rn 0000nnnniiii0001 iiiiiiiiiiiiiiii imm<<8 → sign extension → Rn
:movi20s imm20s, l_rn_24_27
is l_opcode_28_31=0b0000 & l_rn_24_27 & l_opcode_16_19=0b0001 & imm20s
:movi20s simm20s, l_rn_24_27
is l_opcode_28_31=0b0000 & l_rn_24_27 & l_opcode_16_19=0b0001 & simm20s
{
l_rn_24_27 = imm20s;
l_rn_24_27 = simm20s;
}
#